x86: fix vmemmap printout check

Signed-off-by: NYinghai Lu <yhlu.kernel@gmail.com>
Cc: "Nick Piggin" <npiggin@suse.de>
Cc: "Mark McLoughlin" <markmc@redhat.com>
Cc: xen-devel <xen-devel@lists.xensource.com>
Cc: "Eduardo Habkost" <ehabkost@redhat.com>
Cc: "Vegard Nossum" <vegard.nossum@gmail.com>
Cc: "Stephen Tweedie" <sct@redhat.com>
Cc: "Jeremy Fitzhardinge" <jeremy@goop.org>
Signed-off-by: NIngo Molnar <mingo@elte.hu>

arch/x86/mm/init_64.c

@@ -1104,9 +1104,6 @@ vmemmap_populate(struct page *start_page, unsigned long size, int node)
 						PAGE_KERNEL_LARGE);
 				set_pmd(pmd, __pmd(pte_val(entry)));
 
-				addr_end = addr + PMD_SIZE;
-				p_end = p + PMD_SIZE;
-
 				/* check to see if we have contiguous blocks */
 				if (p_end != p || node_start != node) {
 					if (p_start)
@@ -1116,6 +1113,9 @@ vmemmap_populate(struct page *start_page, unsigned long size, int node)
 					node_start = node;
 					p_start = p;
 				}
+
+				addr_end = addr + PMD_SIZE;
+				p_end = p + PMD_SIZE;
 			} else
 				vmemmap_verify((pte_t *)pmd, node, addr, next);
 		}